Modifying EP logon screen - Deploying the par file in cluster configuration

Hi all,

we are making some modifications to the EP logon screen by modifying the com.sap.portal.runtime.logon.par file

The changes that we made worked well in the devlopment and quality systems (both systems are single instance systems)

However when i try to deploy the modified par file in production, I am getting a dump sometimes. The reason beaing production system has two instances...

Can someone please help me how to deploy par file in a server with two instances?

Thanks

Bharath Mohan B